Go with this shit called The GodFather. It's great if you have a huge collection. I like it because it has a smart automated rename command that will clean up your filenames. It's just tight, peep it out.
you can edit pretty much anything attatched information wise to the song. for heads that like to have they shit organized in whatever way they want its a damn good way of doing so.
For anyone that has an mp3 capable phone I'd recommend godfather as well. Sucks trying to play an album on your phone and shit shows up multiple times because of incorrect tags.
because if you want to shorten all the file names and cutout all of the unecessary underscores, dashes etc its way easier since it's automated. You can batch all of your music too. Like I had it go through and organize all the tags on all of my 27k mp3's.